Perhaps you should try some spelling variations:
"coder coder teaching allocation problem" » "coder coder teaching collocations problem" (Expand search), "coder coder teaching application problem" (Expand search), "coder coder teaching association problem" (Expand search), "coder coder teaching location problem" (Expand search), "coder code teaching allocation problem" (Expand search), "coder poder teaching allocation problem" (Expand search), "coder model teaching allocation problem" (Expand search), "coder decoder teaching allocation problem" (Expand search), "code code teaching allocation problem" (Expand search), "decoder codec teaching allocation problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder teaching allocation problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder teaching allocation problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder teaching allocation problem ) OR ( api python python python programming ))*.